US3847304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag-type fluid and paste dispenser
Assignee: Individual
•
Filing: 1973-08-13
•
Granted: 1974-11-12
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Expires: 1993-08-13
Abstract
Abstract In a bag-type fluid or paste dispenser in which the content material is contained within a flexible bag having one end communicating with a dispensing valve while the bag is pressurized by means of a releasable spring.
Inventors
- 👤 M Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:52
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/02; B67D7/0216; B65; B65D; B65D83/00; B65D83/76; B65D83/766
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
182 words
In a bag-type fluid and paste dispenser comprising a deformable bag and a fluid or paste material to be dispensed within said bag, a rigid Housing dimensioned to enclose the filled bag therein, said housing being open at the bottom and closed at the top, a dispensing valve in the top, a hollow needle extending from the dispensing valve into the interior of the housing in position to pierce the bag when the latter is inserted therein, a bottom wall removably connected to the housing to close the open bottom end of the housing, a disc plate dimensioned for axial displacement within the housing between retracted and extended positions of adjustment, means for releasably latching the disc plate in retracted position, means constantly urging said disc plate toward the extended position and means for axial adjustment of the bottom wall in a direction toward or away from the top wall to maintain or increase the force of said urging means on said disc plate thereby to compensate for loss in force on the disc plate as material in the bag is dispensed.
Claim 2
Dependent Claim
182 words
In a bag-type fluid and paste dispenser comprising a deformable bag and a fluid or paste material to be dispensed within said bag, a rigid Housing dimensioned to enclose the filled bag therein, said housing being open at the bottom and closed at the top, a dispensing valve in the top, a hollow needle extending from the dispensing valve into the interior of the housing in position to pierce the bag when the latter is inserted therein, a bottom wall removably connected to the housing to close the open bottom end of the housing, a disc plate dimensioned for axial displacement within the housing between retracted and extended positions of adjustment, means for releasably latching the disc plate in retracted position, means constantly urging said disc plate toward the extended position and means for axial adjustment of the bottom wall in a direction toward or away from the top wall to maintain or increase the force of said urging means on said disc plate thereby to compensate for loss in force on the disc plate as material in the bag is dispensed.
Claim 3
Dependent Claim
22 words
A dispenser as claimed in claim 1 in which the housing is of cylindrical shape and the bag is of cylindrical shape.
Claim 4
Dependent Claim
51 words
A dispenser as claimed in claim 1 in which the means removably securing the bottom wall to the housing to close the open bottom end comprises screw threads on the adjacent surfaces of the housing and a cylindrical section extending from the periphery of the bottom wall for threaded engagement therebetween.
Claim 5
Dependent Claim
28 words
A dispenser as claimed in claim 1 in which the disc plate comprises a rigid plate having a cross section corresponding to the cross section of the housing.
Claim 6
Dependent Claim
76 words
A dispenser as claimed in claim 1 in which the means for releasably latching the disc plate in retracted position comprises a key, an elongate rod connected at one end to the disc plate and the other end to the key, and a key slot through the bottom wall of the housing dimensioned to enable passage of the key therethrough when in one position and to block passage of the key therethrough when in another position.
Claim 7
Dependent Claim
35 words
A dispenser as claimed in claim 1 in which the means constantly urging the disc plate toward extended position comprises a coil spring disposed between the disc plate and the bottom wall of the housing.
Claim 8
Dependent Claim
44 words
A dispenser as claimed in claim 1 in which means for adjustment of the bottom wall relative to the top wall comprises an elongated threaded section in either or both the adjacent walls of the cylindrical section and the bottom wall of the housing.
Claim 9
Dependent Claim
25 words
A dispenser as claimed in claim 1 in which the bag is formed of a deformable material which is impervious to the liquid or fluid.
Claim 10
Dependent Claim
17 words
A dispenser as claimed in claim 8 in which the bag is formed of an elastic material.
Claim 11
Dependent Claim
23 words
A dispenser as claimed in claim 8 in which the bag is formed of a material which is foldable in the lengthwise direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |